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Hematologic side effects of drugs.

M M Lubran1

  • 1Harbor-UCLA Medical Center, Department of Pathology, Torrance 90509.

Annals of Clinical and Laboratory Science
|March 1, 1989
PubMed
Summary

Drugs can cause serious blood disorders like neutropenia and aplastic anemia through direct toxicity or immune responses. Understanding these drug-induced hematologic adverse effects is crucial for patient safety.

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Area of Science:

  • Hematology
  • Pharmacology
  • Toxicology

Background:

  • Drugs can negatively impact bone marrow and peripheral blood cells.
  • While rare, drug-induced aplastic anemia is a severe condition.
  • Hematologic adverse effects are common, including neutropenia, thrombocytopenia, and anemia.

Purpose of the Study:

  • To review drugs causing hematologic adverse effects.
  • To describe known mechanisms of drug-induced blood disorders.
  • To highlight the significance of these adverse events.

Main Methods:

  • Literature review of reported drug-induced hematologic adverse effects.
  • Analysis of mechanisms, including direct toxicity and immunologic pathways.
  • Categorization of common hematologic effects.

Main Results:

  • Neutropenia, thrombocytopenia, hemolytic anemia, aplastic anemia, and macrocytic anemia are the most frequent drug-induced blood disorders.
  • Mechanisms include direct drug toxicity, immune-mediated reactions (hapten or autoantibody formation), and exacerbation of erythrocyte enzyme defects (e.g., G-6-PD deficiency).
  • Antineoplastic drugs, chloramphenicol, and penicillins are cited examples.

Conclusions:

  • Drug-induced hematologic adverse effects are a significant clinical concern.
  • Mechanisms vary, involving direct toxicity, immune responses, and interactions with red blood cell enzyme deficiencies.
  • Further research is needed for unknown mechanisms.

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